Improvement in cleaning-brushes tor ordnance



J. T. GREENFIELD.

ing Ordnance;

' Brushfof Clean Patented Oct. 5, 1869.

MPEIERS PD IOTGLITNOGRAPHEH, WASHINGTON. D. C.

' tinned $121125 JOHN TYNDALEGREEN'FIELD, or DOVER. ENGLAND.

Letters Patent No. 95,468, dated'O ctober 5,1869.

IMPROVEMENT m CLEANING-BRUSHES P03 oRmvANcn.

The Schedule referred to in these Letters Patent and. making part of the same.

To all to whom it may concern Be it known that L'JOHN TYNDALE GnEEmrIELD, of Pencester street, Dover, in the county of Kent, England, a lieutenant in her Britannic Majestys Royal Artillery, have invented An Improved SideArm for Clearing the Chambers and Riding of Ordnauce; and I dohereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawing, and to the letters of reference marked thereon.

To enable-others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

This invention is designed to supersede the sponge and searchers at present employed for clearing the chambers and rifling of ordnance, and which have been found very defective in practice; and consists in substituting, in lieu thereoflan implement or side-arm which shall perform the double office of sponge and searcher.

The principle I have sought to. attain is to so construct an implement that it shall enter the bore ofthe gun at low gauge and-withdraw at high gauge, so as to get behind and lay hold. ,of any portions of unburned cartridge-case that maybe at the bottom of the chamher or breech of the gun, and bring it out, lighted or not, clear of the muzzle of the gun.

The improved side-arm or implement above referred to, consists of a brush made of coir, (or bass,) let into a drum of wood, similar to that of thepresentspongehead. The bristles are set helically around the said drum, so that they have a layoriucline all in one direction horizontally.

I also propose to form the hinder part of the-brush head smaller in diameter than the fore part thereof,

and have the bristles longer than those that are in front, for the purpose of enabling the longer bristles to sweep wellinto the deep grooving of rifled guns.

The effect of an implement of the above construe tion is as follows:

When inserted into the bore of a gun, it moves home very easily by reason ofthe bristles being compressible, but when pushed home, and supposing the said bristles all to incline to the right, by turning the brush in the same direction as the lay of the bristles, they will be set up, or raised,-and thus brought into close contact with the chamberfor breech of the gun, and seize hold of any substance adherin'gthereto, and the act of withdrawing the said, brush, and giving a gentle turn .to thestave, sets the bristles still more erect, causing them to scrape the whole periphery of the hereof the gun, and keeping in their grip, and withdrawing, any loose substance the bristles may have come in contact with. I

By the use of an implement of the above construction, I am enabled to keep the gun clean and free from allsubstances that might catch fire at the next round, or foul the gun and canse'miss-fire.

Description of the Drawing. Figure 1 represents an elevation of a side-arm orv smooth and rifled ordnance,and as it would appear when ready for use.

which the bristles are fixed.

The same letters of reference parts at each 'of the said figures.

A marks a piece of wood,.similar to an ordinary- The head or top part B of the piece A has bundles of bristles, O, of 'coir (or bass) fixed thereinto with marine glue by preference.

The said bristles, which are fixed around andabout the part B, as shown by the drawing at fig. 1, are all part-B, between a and b, incline slightly upward, as

the chamber or breech of'the gun.-

The bristles D, which are also inclined in the same direction, are arranged horizontally or nearly so around the lower part of -B, and those bristles marked E are arranged helically as well as inclined horizontally about the smaller part or barrel of the 'pieceA, and'are longer than the bristles D, that they may search and clear the rifling of rifled ordnance.

Gr' isa portion of the stave or handle, fixed into A, the length of the'said stave being in proportion to the length of the gun.

easily in the bore of a gun','the same may be done by giving it a slight turn -to the left hand; and,'when quite home, by giving the implement a slight turn to above stated. v

What I claim as 'my invention, and desire to sec byLetters Patent, -is.' I a A cylindrical brush for cleaning ordnance-bores, in which the'bristles are .set helically into a central sup- 47 8548 Biggin Street, Dover. V

implement for clearing the chambers, and bore of Figure 2 is an elevation'of the foundation into denote corresponding sponge-head or implement used for sponging ordnance.

inclined or laid in onedirection. The bristles at thewell as sideways, to enable them to search and'clear In order to insert and force home this implement the right, the bristles will he raised or set up and'se'ize holdof any loose substance that maybe in the gun, as

port, with a uniform inclination, not only slightly rear- 

